Occupant-propelled sliding vehicle



APPLICATON FILED JULY 14|v1920..

Patented May 10, 1921.

' newline.

. A .Be itknown that I, CONRAD CoNnAnf DAHL, or

.lipplicatiqn sied July y14,1

DAHL, a citiy Zeng. of the United States, residing `at Chi-` cago, .-inthe ccunty of Cook and the State of Illinois, `have "invented certainv:new anduseful f ImprovementsV in :Occupant-13rd f pelled SlidingVehicles, of which rthe yfollowing isa specification, reference beinghad y to .the accompanying :drawing/s, forming.' a part -t ,hereof.` r

The purpose of lthis.invention toprovide an improved form of runner.andprorig. 2,

pel'lerfor` an `occupant-,propelled sled or ments and `features ofconstructionand described, asindicated' in the claims.

`Ifigure `lis a planview `of a forward end yportion 4with thesteeringrunners-of the f g. 13j is" a ,detail sectional; ,the vline,13-3, @Fig-2e i. .,FigAc is a section `.at the line, 1 -4, on

.iig. .5, "isl seduta at the une, 5"-5, on Fig.2. g v: Inxthedrawingsthere is showna sliding `vehicle,`l designed to be .y occupant-propelledand L. having propelling .y mechanism shown which do notconstitute apart cf the present inventiOIl, 4,being'fully shown and described yin myco-pending application lhereinaiter mentioned in rconnection "withV the`brief de- Ascriptionofsaid mechanism `whichidentifies its `location`withrespect tothe Speciiic parts ofthe construction which constitutethepresent invention., In the ,drawing the frame of thevehicleisrepresented by two` -longitudinalflbara ,1, l1, framed together 4rigidlyby anysuit'able means Arepresented i by.V aQ--cross bar, .2, atthe kforward end, and

`arc form, terminating inthe spindles, 3a, 3a.,

the rigidy rear a'xle3,"whichis .shown in uponwhich the `rear; runnersare ,nounted.

lThe forward runners are adapted for steering theI vehicle, and aremounted upon spindles, 5, V5, which are pivoted to the op- V ,/positeends of ,the rigidly.,,attached trans-` verse frame members, 6, 6. Nofurther description of the steering i runners, either' as to Athemounting or means of steering, is requiredj'for understandingofftheLpresent invention, said steering rmeans .constituting no PEPE,

` "oCCUiANTPnCPELLED sLinrivc vEHICLE.

1920.-.sriva1`ivu 396,201. I Y

constructed witha hub for mountingit iin lieu.- of ajwheel :upon 'theproper axle i i i spindle, and all the runners arev alike in thisrespect, 'thehub infeach `case(consisting of a. sleeve, l0, eXteriorly`threaded at. its oppo-k site end for receiving the clamping nuts,i

11,11, which are set up against the spacing sleeves, v12, ,12, forclamping them f against FFICE.

, part-oisaidinvention. 'Eachvof therlpiniiersl runner-carrying .farms.orjspolresyv 13, 13,

,f which are `themselves spaced apart. bya

sleeve, 14, 'as .seen `in Fig. 3. These spoke .y v Mms., QlmpedllidLSpacedvas .described by i other slidiiigfvehicle It consists in the elemeansifof the spacing sleeves mentioned upon the hubwsleeve, 10,; extenddivergent vradially tor securement to the runner, 15,

I' `the ytwospcke members beingapplied, and.

an. acute-c ngled longitudinal corner yto the of eachpair having theirYrunning edges Opf corners, yopposite" directions for prevent'-` ingskidding inV both directions. Preferably' corners of therunner edgearethef outer sur- ,"aces of' the runners respectively.

y as seen at 15a, in Fig. 8. For `presenting 5' roadway,-adapted toprevent lateral sliding or sk1dding, and the ttwo. opposite runners the`vertical surfaces offthe acute-angled., i

The propeller` consistsgofga; leg, 2,lhav .K

ing a foot, 2l,whichhasanfacutefangled `heel Vas seen at"2la, Aand `a'bottom curved.

less than that length as. seenlat `21?, termin an arc-"whose radius.shortens from be'- minating in a bluntly rounded ftoe yTas seen 1,

at- 2l". The leg is madeof two-Hat bars, 100 Yis secured, atthe,lowerendfoftheleg, vthe c secure'ment being' preferably; apernianent(manner as byfrivets, 201. 'The' foot hollowed transversely at the`bottom aroundr theV en- 7.tire. curveV thereofvafs seen.y at20, togive-it acute-angled lateral edges causing tovholjd` `20, 20a,`between,which the foot block, 21,

its coiirsein' itsreturn slidely Thecurveof thebottom Vmakessubstantially a rightvany ..glefwith a line` from the heelr to the pivotabout which .the leg 'swingsin the propel-` fling movement; to -give'the heel an kacute y angle the rear edge of the footblock lisfcut nback as seen at 21,theferear edges o f the.l lapping ends of the legbars being similarly g as above pointed out,in whichV the propellernotched as seen at the samel pointy;v v

The leg is pivotally carried at its upper end a vpair of links, 25, 257which project respectively from the two lever members, 30a, 30?, oftherearmostlever couple of a lazy-tongs propelling device, 30whichismounted byv the foremost pivot, 301?, on a head', 31, vertically pivotedto the frame structurefat apivot bolt or kingpin,v32. The lazyltongs isextended for' propelling the vehicle by fmeansof an operating lever,

,34, whichhas a swinging fulcrum support afforded by 'thelowerf rearVendsof the links,

n 35, pivoted at their upper forward ends to the headat/35a, saidoperating lever engaging an intermediate pivot,-as the second from thefront-of thelazy-'tongs for extending` the latter.' This propellingniecha- Y nism vv`is-'fully4 described fin my co-pending application,@Serial BT01396262, ledl July 14, 1920,v and requires no furtherdescription4`v h ere, but has a Special utility in conjuncf tion withthe propelling leg for engaging the groundjvor ice, asv differentiatedfroma wheel, as'he'reinafter pointed out.

l A forwardly-projecting bracket-stop, l36,

on the leg is stoppedagainst the lower link, 25, at therearwardlyfinclined position of theleg which is effective forl grofundengagement of ,the heel, 21a, for propulsion.

Y 37 is'` a cushion on the bracket, `36for preventing. `unpleasarjltclank :of .encounter of 'the bracketewirh the link, 25-

, 'Avery important ^feature of thisy inveni tion Has presented theconstruction shown, p 1 s that the. ice or ground-engagingV propellerat: its ground? lori, icefengagingposition is` inclined'fthat is, hasthe line'fromits pivot to'thepoint `of gro/undur ice-engagementinclined,frearwardlyj Lfrom its engaged I "poifnuupwardfto its pivot. Indevices for ylike purposes'iheretofore, so far as I. am

aware', the propelling' device when designed to engagethe ground with arearward thrust' for i giving forward propulsion', has Yeither beeninclined down rearwardly, that is,` in

- fthe direction of l thel propelling thrust throughout its 'entirepropelling-,1 Stroke, or

;. v"pivotedforswinging in an arc i-in which V,aftera-short,portion oflsaid stroke-it reaches 'a position of downward rearward inclina-Vftionand makeslthe remainder ofllthe stroke 1 lotion f1have*found'imperfectly efl'ectivdlfor .theyreason that the [direction of`movement increasingly thus inclined. Suchv construcofthe propellerabout its pivotlasdthe vethrust ,-whilethef propeller point Y' remainsat A* ',orijcefr giving' the' thrust is upward, and

tends 4tocause, orfre'adily permits,lthe disy engagement of' thepropeller point 'from the ground ice V.when-the latter cracks orymounted on the vehiclewith a advantage pointedout.'v d lVinclined'toward vertical position. c,

yclaim 1,

hiele v moves -forward fr under lthe Vprospelling yieldsat thepointvofengagement. ut,von the contrary, with' the construction shown,

point of engagement, "the propeller tending to move downward ytendsconstantly to take'v a new. hold Land maintain 'the' propulsion Aneitherescapingfromthe'ground nor cease ing to propel the vehicle. Theoperating parts of the propeller are i' designed and Iclaimg-f- 1.\Incol `binationwith avehicle adapted to be propelled Lby rearward thrust"ofthe view to the' ground-engaging means, apro-peller pivot: 11

ally carried in thevehiclewframe Aand in# clined` down forwardly fromits, pivotl to its ground engagement, structure on, which the propeller.pivot isfsupported for backward and forward movement bodily on the vef5hicle withofut reversal of inclination during said backward movement,and means vfor giving such pivot support such movement.

r2.111 the construction defined incla'nn l, forgongf thePV0tfSUpp0rting-means i* being mountedon the vehicle 'with' freedom` Yfor upward movement ofthe propeller pifvot as the propeller swings aboutitspivotgfrom 3. In theconstructionndefin d foregoing, the propellerbeing free to 'swing Y aboutv its pivot vupon reversalof-[the :di-

rection jof V,thrust from operative position inclined uprearwardly totrailing position l inclined down` rearwardly.v

4. In` a, slidingly propelled vehicle, an

ice or ground-engaging device `consisting of a pendant fore-and-aftswinging leg, having a foot-projecting therefrom in the plane of n swingof the leg, said foot having its rounded edge curved in 'anj arc whoseradiusis initiallyA substantially equal to'and glveluy ally `becomessubstantially; less-than the radiusfof swingcf the leg and whichterminates infan abruptly rounded itoe."V

y f5.Y In a slidinglypropelledvehicle, an ice orV ground-engaging deviceconsisting of a flanges laterally spaced apart and a part to which theyare laterallyapplied vfor sospacing them."`

Vpendant foire-andf'aft swinging leg, having a foot projectingsubstantially in the plane ofswingof theleg, comprising two ribs orv6.'j'l`he construction defined infclaim 4,` l the footlha'ving anacuteangle at itsheel `1,377,402 Y Il 3io of :theyinitial vperi', of thecurve of the 8. In the construction denedin elairnl ground-engaging edgeof the foot. foregoing, the vertical surfeceof the aoutei-y 10 l l 7.1Inan` occupant-propelled sliding verrfingrgfled corners `being 1in kearchrunner the hicle, oppositely-positioned runners n having. outer surfacethereof.` v v r5 their `sliding edges oppositely beveled tov ln'testimonWherof'l have `hereunnouse;`

present acute-angled longitudinal corners to a my 'hand at heago,Illinois, tliisjtwelfth`V Y the roadway, of which one side is a Veticaliday of July, 1920. Surface of the runner. n v v Y i e CONRAD DA'Hu,

